The present invention relates to a suture for orthopedic surgery comprising a line body and a plurality of sharp protrusions. Cutting the outer circumferential surface of the wire body in the same or opposite direction in a spiral angle by a double-knife cutting method, so that the outer circumferential surface of the wire body forms a plurality of first slits and second slits which are staggered at 180 degrees. Then, a third slot which is opposite to the first slot is cut between two adjacent first slots, and one cut is formed one by one after completing the cutting of each slot. Pull the sharp protrusions of the skin. Thereby, the stitch of the present creation uses reverse cutting to increase the bonding strength with the skin.本創作有關於一種用於整形外科之縫線，其包含有一條線體與多個尖銳凸出物。藉由雙刀切割方式在一個螺旋角度內對線體之外周面進行相同或相反方向的切割，使線體之外周面形成多個呈180度交錯排列之第一切槽與第二切槽，然後在其中二個相鄰之第一切槽之間再切割出一個與第一切槽呈現相反方向之第三切槽，在完成每一個切槽的切割之後會一一對應地形成一個用來拉住皮膚之尖銳凸出物。藉此，本創作之縫線利用反向切割的方式來增加與皮膚之間的結合強度。
